[Bug-cpio] [PATCH] Check for size overflow in tar header fields

[Thomas ☃ Habets]

    Check for size overflow in tar header fields.
   
    This prevents surprising outputs being created, e.g. this cpio tar
    output with more than one file:
   
    tar cf suffix.tar AUTHORS
    dd if=/dev/zero seek=16G bs=1 count=0 of=suffix.tar
    echo suffix.tar | cpio -H tar -o | tar tvf -
   
    -rw-r--r-- 1000/1000       0 2019-08-30 16:40 suffix.tar
    -rw-r--r-- thomas/thomas 161 2019-08-30 16:40 AUTHORS

Patch attached, but also at https://cement.retrofitta.se/tmp/cpio-tar.patch

--
☢ Thomas ☢

cpio-tar.patch
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